Tractor-plow.



l. B. MASON.

v TRACTOR PLOW.

APPLICATION FILED NOV. 14, 1918.

1 ,298,989. Patented 'Apr. 1, 1919 3 SHEETS-SHEET I.

J. B. MASON.

TRACTOR PLOW.

APPLICATION FILED NOV. 14. 1913.

1,298,989, Patented Apr. 1,1919..

3 SHEETS-SHEET 2.

ea X

Fiji a4, as /\l J'aaon 5. Mason 1. B. MASON.

TRACTOR PLOW.

APPLICATION FILED NOV- 14, 1918 Patented Apr. 1, 1919.

3 SHEETSSHEET 3.

Jason 5; Mason To all whom it may concern:

JASON B. MASON, or mmnzoo, MICHIGAN, YASSIGNOR To REED FOUNDRY & MACHINE 00., or KALAMAZOO, MICHIGAN.

mc'ronrrnow.

I Application filed November Be it known that I, JAsoN LMAsON, a citizen of the United States, res ding at the city and county of Kalamazoo, State of Specification of Letters Patent.

- Patented Apr. 1, 1919. 14,1918. Serial No. 2 2,541.

several views, and the sectional-views are taken looking in the direction of the little I arrows at the ends .of the section lines.

.Referrin to the drawing, the frame 1 is 3 Michigan, havelinvented certain new and\preferably uilt up of channel iron but as Ms details form no part of this invention I useful Improvements in Tractor-Flows, of

. which. the following isa specification.

V with power means for raising and lowering. the plows.

This invention relates to improvements in tractor plows. Y

The main objects of this invention are:

First, to provide an improved tractor plow Second, to rovide animproved plow lift for tractor p ows in' which the raising and lowering is effected by the continuous rotation of a crank controlled by means of a clutch.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

'. I accomplish the objects of myinvention by the devices and means described in the following specification. The invention 1s clearly defined and pointed out'in the claims.

A structure which is apreferred e1i1bodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which: 1

Figure I is a side view of a structure embodying the features of my invention,

parts being omitted and other partsbemg s 7 conventionally.

Fig. II is 'a detail plan view of my improved plow lift mechanism.

Fig; III is a detail view partially in section on a line corresponding to line 3-3 'of I Fig. I.

Fig. IV is an enlarged detail partially in section on a line corresponding to line 44 of Fig. II.

Fig. V is a detail view partially in section on a line corresponding to line 5- 5 of Fig. II.

Fig. VI is a detail plan view of the plow draft connections on a line corresponding to the broken line 66 of Fig. IX..

' Fig. W1 is .a detail side elevation showing further details of the lift mechanism.

Fig. VIII is a detail section on a line cor- In the drawing similar reference characpieces lland 12. vThe rear ends of the I draw bars are adjustably supported 10 the "arms 13 on the rock shaft 14, the arms ein Y connected to the draw bars by the links 1 The rock shaft is actuated by the lever 16.

The means for securing the lever'in itsadjusted positions are not illustrated as suitable means are well-know i The crosshead 7 of the plow beams is con nected to the cross member of the draft b ar by means of a swivel comprising a swivel bolt 17 arrangedthrough the crosshead to engage the swivel member 18. The front end of the swivel member 18 is engaged with an eccentric block 19 carried by the pin 20 disposed through the cross member of. the draw bar. This eccentric block is secured in its adjusted positions by the head 21 secured tothe pin and having a series of holes therein adapted to receive the locking pin 22. By means of this eccentric the draft of the plows may be shifted oradjusted laterlifting lever being disposed centrally relative to the plow beams.

' The crank 26 of the crank shaft is connected to-the lever by means of the link 27. The crank shaft is driven from the driving shaft 28 projecting from the housing of the transmission 4. On this shaft is a worm gear 29 ters refer to similar parts throughout the provided with a I clutch member 30 with which the sliding clutch member 31 coacts, the sliding clutch member being splined to the shaft. The clutch member 31 1s shifted by means of the rock shaft32 having a hand lever 33 at one end and a forked lever 34 at the other engaging the clutch member 31.

A driven shaft 35 is disposed longitudinally of the frame and provided, with a worm gear 36 meshing with the worm 29. At its rear end the shaft 35 is provided with a worm 37 meshing with the gear 38 on the crank shaft 23. a

By thus arrangin the parts the plows are raised and lowere by driving the crank shaft continuously in one direction, and, owing to the worm driving connections, the

plows are held in their adjusted position either raised or lowered or partially raise or lowered, the entire control be ng through the clutch.

j The adjustment of the plows is supplemented by an improved tilting means comprising the link 39 threaded at its upper end to receive an adjusting nut of the a justing means designated generally by the numeral This tilting means is the subject matter of a 'co-pending' ap lication and I do not, therefore, descrlbe t e same in detail herein.

My improved plow lifting mechanism'is.

very desirable in that it is simple and easy to operate and may be nicely adjusted or operated as working conditions may require. I have illustrated and described my improvements in an embodiment which I have found to be very practical. I have not attempted to illustrate or describe certain modifications or adaptations in structural details, as I believe the disclosure made will enable those skilled in the art to which my invention relates to embody or adapt the same as may be desired.

Having thus described my invention, what forward end to the rame and connected at its rear end to said beam, and a link connectin said lever to the crank of said shaft.

2. file. combination with a frame, of a draw bar pivotally mounted thereon, means for adjustably supporting the rear end of said draw bar, a plow provided with a beam pivotally connected to said draw bar, a'crank shaft on said frame disposed above said beam, a lifting lever pivotally mounted at its froward end to the frame and connected at its rear end to said beam, a link connecting said lever to the crank of said crank shaft, and driving connections for said crank shaft comprising a worm whereby said crank shaft is held in its adjusted positions. 3. The combination with a frame, of a plow mounted for adjustment, a crank shaft on said frame disposed above said plow, a lifting lever connected to said plow, a link connecting said'lever to the crank of said crank shaft, and driving means for said crank shaft comprising a worm and clutch whereby said crankshaft may be-continuously driven in one direction and-is held in its adjusted positions. 7

In witness whereof I have hereunto set my hand and sealin thepresence of two witnesses.

JASON B.MA.SON. [1 s.] Witnesses: v r

J. E. WELBORN, H. M. WELBORN. 

